// ECB/SIS Public License, version 1.0, document reference SIS/2001/116
//
// Copyright (C) 2008 European Central Bank. All rights reserved.
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module org.sdmx.stores.xml.v2.structure.collection
{
	//import org.sdmx.model.v2.base.SDMXArtefact;
	//import org.sdmx.model.v2.base.VersionableArtefact;
	//import org.sdmx.model.v2.structure.code.Code;
	//import org.sdmx.stores.xml.v2.structure.ExtractorPool;
	//import org.sdmx.stores.xml.v2.structure.ISDMXExtractor;
	//import org.sdmx.stores.xml.v2.structure.base.VersionableArtefactExtractor;

	/**
	 * Extracts Codes out of SDMX-ML structure files.
	 * 
	 * @author Xavier Sosnovsky, Anthony Morel
	 * 
	 * @todo
	 *     - parentCode
	 */ 
	export class CodeExtractor implements ISDMXExtractor {
		
		/*==============================Fields================================*/
		
		private namespace structure = 
			"http://www.SDMX.org/resources/SDMXML/schemas/v2_0/structure";		
		use namespace structure;
		private var _versionableExtactor:VersionableArtefactExtractor;
		private var _item:VersionableArtefact
		
		/*===========================Constructor==============================*/
		
		constructor() {
			super();
			_versionableExtactor = ExtractorPool.getInstance().
				versionableArtefactExtractor;
		}
		
		/*==========================Public methods============================*/
		
		/**
		 * @inheritDoc
		 */
		public extract(xml:XML):SDMXArtefact {
			_item = _versionableExtactor.extract(xml) as VersionableArtefact;
			if (null == _item.description) {
				if (null == _item.name) {
					throw new SyntaxError("Could not find the code name!");
				} else {
					_item.description = _item.name;
				}
			}		
			var code:Code = new Code(_item.id);
			code.urn = _item.urn;
			code.annotations = _item.annotations;
			code.description = _item.description;
			return code;
		}
	}
}